Extreme Planets is a science fiction anthology of stories set on alien worlds that push the limits of what we once believed possible in a planetary environment. Visit the bizarre moons, dwarf planets, and asteroids of our own Solar Systems. And in the deeper reaches of space encounter super-Earths with extreme gravity fields, carbon planets featuring mountain ranges of pure diamond, and ocean worlds shrouded by seas hundreds of kilometers thick. The challenges these environments present to the humans that explore and colonize them are many, and are the subject matter of these 15 tales from leading science fiction authors and rising stars in the genre.